YouTubeDesktop
YouTubeDesktop is basically a front end for Youtube. When you first visit the
site you’ll be presented with a thumbnail view of popular videos. You can browse or search for more videos. Click on one and a window will pop up and begin playing the video.
YouTubeDesktop allows you download the video as an FLV file, convert it to AVI, MP4, WMV, MOV, or 3GP file.
YouTubeDesktop is currently in private beta.If you are not invited,you can join the beta to ask for an invitation.[via Last100]
